Bailer bottom



Patented .lunes, 1926.

J.TULIUs HERMAN HOLMGREEN, oF sAN ANTONIO, TEXAS.

BAILEB iao'r'ronr.l

- Application led January 28, 1924. Serial No. 689,114.

This invention relates to a bailer bottom utilized in bailing out drilled wells and adapted to be secured to a bailer which is lowered into a well/for removing fluid or solid matter such as sand, mud, slush, or other heavy material from oil, gas, and other wells.

l An object of the invention is to ,provide a bailer bottom of simple construction, of few parts, and inexpensive to manufacture, and which will remove mud, sand, slush, or other material from the bottom of a' well substantially by the mere insertion and removal of the device.

Another object of the invention is to provide an eiiicient bailer bottom which will `not become clogged by mud and grit, and which is free from springs and valves as well as leather cups land packingswhich are easily rendered inoperative.

A still further object of the invention is to provide a bailer bottom having means for agitating the mud or the like in the well, and causing it to flow into the body of the bailer, as well as a device which will automatically discharge'its contents upon being removed from the well. l l

The invention will first be hereinafter more particularly described with reference to the accompanying drawings which are to be taken as a part of this application and then lpointed out i1. the claims at the end v of the description.

In said drawings:

Fig. 1 is a vertical section of the device in place at the bottom of a well, withfthe parts in position to receive fluid or solid material to be removed from the well.

Fi 2 is'a sectional view at right angles to Flg. 1 showing the relative position of the parts as `they are suspended during their insertion. into, or removal from, the well.

Fi 3 is a sectional view on the line 3-3 of Fig. 1 showing the slot and pin which.

prevent relative rotation between the parts.

Referring to said drawings, in which the same reference characters are used to denote corresponding parts throughout the several views, the devlce comprises a tube 10, secured by means of a coupling 11, at the lower end of a bailer 12. Telescoping over the lower ortion ofthectube lO'is an outer tube 13 havlng a dri-1l bit 14 welded or -otherwise -suitably secured at its lower end and having Aits upper end provided with an annular internully thickened portion forming a shoulder or valve s eat 15 adapted for cooperation with a corresponding annular external enlargement forming-a. shoulder or valve 16 said shoulders 15 and 16 prevent the outer tube 13 from slipping oli' the end of the i-n-v ner tube 10. The lower end of the inner tube 10 is thickened and closed, and the tube is provided adjacent said end with t'wo longitudinally extending diametrically opposed slotted openings 17, adapted for cooperation with a similar pair of openings 18 on the outer tube. The openings 17 and 18 are adapted, upon relative longitudinal movement of the parts, to register and allow mud, sand, slush, or the like to pass into the inside of the bailer when the same is in tha well and its chisel or drill bit 14: is pointed to Jfacilitate the removal thereof by' agitating the mud and causing it to How upward and through the openings 17 and 18 into the bailer.

To prevent relative rotation of the tubular members 10 and `13, so that the openings will come into proper registration when the parts are collapsed, I provide a slot 19 spaced from the slots 18 in thev outergtube 13, adapted for cooperation with a pin 20 in the end of the tube -10 for iding the parts in their relative longitu inal movement. The lower end of the outer tube 13 is provided with an enlarged'bore 21 in which is slidably mounted the enlarged solid end 22 of the pipe 10. The outer pipe 13 is provided at the inner. end `of the enlarged bore 21 with an annular shoulder or y valve seat 23 adapted for cooperating with a similar valve 24 onthe solid end of the tube 10. These annular valve seats are preferably vdisposed at angles of 30 degrees with the cooperating tubular members.

As will be observed by reference to the drawings, the openin s 17 and 18 are prefer` ably Iof a width slig tly greater than onehalf the internal diameter of the inner tube 10 andare preferablyl of a length slightly greater than twice the internal diameter.

When the bailer is suspended -while be,- ing lowered into a well or removed therefrom, vthe openings 17 and 18 will be out of registration and the bailer will remain closed by the action of gravity, but when lowered into'the well, upon striking the surface of fluid it will float and cause sul'cient relative movement to cause 'the bailer to open. Likewise the impact caused by the striking the bottom of the Well will cause the same result.

By churning the bailer up and 'down when at the bottom, it will agitate the sediment and cause it to iiow into the bailer through the slots. When it is withdrawn, the outer tube by gravity plus the suction caused 'by the sediment, drops down closing thelbailer, thus bringing out of the well anything that may be on the inside. When the bailer arrives at the top, and it is set into the slush trough, the weight of the bailer causes the parts to collapse until the bottoms strike together, thus opening the slots and making an automatic discharge of the entrapped fluid or solid matter. If the mud in the bailer is thick and willnot flow out by itself, it can be easily pushed through thev slots with a stick or bar, thus givingan opportunity to empty the bailer.

The peculiar construction yof this bailer bottom is such that there are no loose parts to become disarrauged, and left in the well. The bailer consists practically of only two parts, so arranged that they cannot vbecome separated, and made with a loose fit to prevent mud or grit to cause themto stick in an open position. Although the lit is loose,

the two pairs of valve seats coming together make an absolutely water tight joint around the inner tube, avoiding any possibley leakage of water or other light liquid that may be desired to be brought out of the well.

If desired, my bailer bottom may be used, either with or without reinforcing the same, as a substitute for the ordinary drill in boring wells as the same is particularly adapted for such use since the beveled sharpened end will be effectively hammered by the telescoping of the parts.

Itwill be obvious to those skilled in the art that the device may be modified invarious ways Without departing from the spirit of the invention and therefore I do not limit myself to` the specific form shown in the drawings and described in the specification but only as indicated in the appended claims.

Having thus fully described m said invention, what I claim as new an desire to secure by Letters Patent, is:

1. A bailer bottom comprising an inner pipe' closed at the bottom said inner'pipe "end, an annular contacting shoulder adjacent each end of said slottedv openings, al second tubular member telescoping said first mentioned member having slotted openings therein, said tubular members being relatively movable whereby the slotted openings in one may be brought into and'out of reg' istry with the slotted openings in the other, an annular contacting surface adjacent each end yof said slotted openings, said contacting surfaces being adapted to prevent longitudinal separation of said members and also to prevent leakage from the bailer when the same is being elevated or lowered substantially asset forth.

3. A bailer comprising a tubular member having a closed end, a pair of spaced annular external inclined shoulders adjacent the closed end of said tubular member, said tubular member having slotted openings therein; asecond tubular member telescoping said first mentioned tubular member having a pair of spaced annular internal inclined surfaces adapted for cooperation with said external surfaces on said lirst mentioned tubular member, said last mentioned telescopic member having slotted openings therein for cooperation with said slotted openings in the rst mentioned tubular member and a slot and pin connection between said outer telescopic member and said inner tubular member for preventing relative rotation -between the parts', substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at San Antonio, Texas this 24th day ofkJanuary, A. D. nineteen hundred and twenty-four.

Juus HERMAN HOLMGREEN. [La] 

